After 10 minutes of searching, I found that turning off Text Boundaries in the View menu solves that particular problem. I couldn't find any way to change eithe

After 10 minutes of searching, I found that turning off Text Boundaries in the View menu solves that particular problem. I couldn't find any way to change either the margin or cursor color. I stand by my comment about the little things, e.g a non-changeable bad menu bar color in Google, prodding users over to Bing or Baidu.